{"id":9618,"date":"2026-07-04T10:33:43","date_gmt":"2026-07-04T10:33:43","guid":{"rendered":"https:\/\/materialparts.com\/0154001-drt\/"},"modified":"2026-07-04T10:33:43","modified_gmt":"2026-07-04T10:33:43","slug":"0154001-drt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/0154001-drt\/","title":{"rendered":"0154001.DRT"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The 0154001.DRT from Littelfuse is a 1 A very fast-acting surface-mount fuse from the 154 Series OMNI-BLOK fuse and holder assembly. Designed for tape-and-reel automated assembly, it combines a Nano2 surface-mount fuse with a holder in a single 9.73 x 5.03 mm package, enabling easy fuse replacement without soldering the PCB. Rated at 125 VAC\/125 VDC with a 50 A breaking capacity, it provides overcurrent protection for a wide range of electronic circuits.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Current Rating<\/td>\n1 A<\/td>\n<\/tr>\n
Opening Characteristic<\/td>\nVery Fast-Acting (FF)<\/td>\n<\/tr>\n
Voltage Rating<\/td>\n125 VAC \/ 125 VDC<\/td>\n<\/tr>\n
Breaking Capacity<\/td>\n50 A (AC and DC)<\/td>\n<\/tr>\n
I2t (Melting)<\/td>\n0.6029 A\u00b2s<\/td>\n<\/tr>\n
Cold Resistance<\/td>\nPer datasheet<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\nWide range per datasheet<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nOMNI-BLOK 154 (9.73 x 5.03 mm)<\/td>\n<\/tr>\n
Packaging<\/td>\nTape & Reel (DRT suffix)<\/td>\n<\/tr>\n
Approvals<\/td>\nUL, CSA<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Integrated fuse and holder \u2014 single-step PCB installation<\/li>\n
  • Replaceable fuse without soldering \u2014 protects PCB from rework heat<\/li>\n
  • Very fast-acting (FF) opening characteristic for sensitive semiconductor protection<\/li>\n
  • Tape-and-reel packaging for automated SMT pick-and-place assembly<\/li>\n
  • UL and CSA approved for safety compliance<\/li>\n
  • Compact 9.73 x 5.03 mm footprint saves board space<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Power supply output overcurrent protection<\/li>\n
    • USB port and hub current limiting<\/li>\n
    • Industrial control circuit board protection<\/li>\n
    • Telecom equipment line protection<\/li>\n
    • Consumer electronics internal power rail fusing<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The 0154001.DRT from Littelfuse is a 1 A very fast-acting surface-mount fuse from the 154 Series OMNI-BLOK fuse and holder assembly. Designed for tape-and-reel automated assembly, it combines a Nano2 surface-mount fuse with a holder in a single 9.73 x 5.03 mm package, enabling easy fuse replacement without soldering the PCB. Rated at […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,44],"tags":[870],"chip_brand":[200],"class_list":["post-9618","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-pressure-sensors","tag-0154001-drt","chip_brand-littelfuse"],"acf":{"brief_explanation":"1A very fast-acting SMD fuse in OMNI-BLOK holder, 125VAC\/VDC, 9.73x5.03mm, tape & reel","date_code":"","package_case":"OMNI-BLOK 154 (9.73 x 5.03 mm)","in_stock":9172,"datasheet":"https:\/\/www.littelfuse.com\/~\/media\/electronics\/datasheets\/fuses\/littelfuse_fuse_154_154t_154l_154tl_datasheet.pdf.pdf","price":"$1.90 @ 1500+","product_introduction":"The 0154001.DRT from Littelfuse is a 1 A very fast-acting surface-mount fuse integrated into the 154 Series OMNI-BLOK fuse and holder assembly. The OMNI-BLOK design combines a Nano2 SMD fuse with a holder in a single package, allowing the complete assembly to be installed on the PCB in one step during SMT assembly. When the fuse blows, only the internal fuse element needs replacement \u2014 the holder remains soldered to the PCB, eliminating the need for desoldering and protecting the board from thermal damage during replacement. The very fast-acting (FF) characteristic provides rapid opening for sensitive semiconductor protection. The device is rated at 125 VAC and 125 VDC with a 50 A interrupting rating, and is UL and CSA approved.","working_principle":"The 0154001.DRT operates as a sacrificial overcurrent protection device: (1) Normal Operation \u2014 at currents up to the 1 A rated value, the fuse element maintains low resistance and negligible voltage drop, allowing normal circuit operation; (2) Overcurrent Event \u2014 when current exceeds the rated value, the fuse element heats due to I\u00b2R power dissipation; (3) Very Fast-Acting Response \u2014 the FF characteristic means the fuse opens very quickly at moderate overloads (typically within seconds at 200% rated current), protecting sensitive downstream semiconductors from thermal damage; (4) Arc Interruption \u2014 after the element melts, the resulting arc is extinguished by the filler material within the fuse body, interrupting the circuit at up to 50 A fault current; (5) Replacement \u2014 the blown fuse can be removed from the holder and replaced with a new Nano2 fuse without desoldering from the PCB.","pin_description":"
      Terminal<\/th>Function<\/th><\/tr>
      Pad 1<\/td>Input terminal \u2014 connect to power source side<\/td><\/tr>
      Pad 2<\/td>Output terminal \u2014 connect to load side<\/td><\/tr><\/table>","application_scenarios":"
      • USB 2.0 hub port protection limiting fault current to protect the host controller IC from overcurrent<\/li>
      • 5 V \/ 3.3 V power supply output rail fusing for sensitive digital logic board protection<\/li>
      • Industrial PLC I\/O module internal power distribution with field-replaceable OMNI-BLOK fuse<\/li>
      • Telecom line card secondary protection fuse with very fast-acting response for semiconductor safety<\/li>
      • Consumer electronics battery charger circuit overcurrent protection with easy end-user fuse replacement<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        0154001.DRL<\/td>Littelfuse<\/td>Same fuse with indicating feature<\/td><\/tr>
        0154001.0T<\/td>Littelfuse<\/td>1 A time-lag (Slo-Blo) version for inductive loads<\/td><\/tr>
        0154002.DRT<\/td>Littelfuse<\/td>2 A version, same holder<\/td><\/tr>
        453001.0<\/td>Littelfuse<\/td>Nano2 fuse only (without holder)<\/td><\/tr>
        0154001.5DRT<\/td>Littelfuse<\/td>1.5 A very fast-acting OMNI-BLOK<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9618","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=9618"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/9618\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=9618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=9618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=9618"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=9618"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}